Revolving-ring oven



Oct'. 16, 1928.

vl.. HONIGMANN ET AL REVOLVING RING OVEN F-led June 2, 3.926f 4 PatentedOct. 16, 1928.

Unirse STATES LUDWIG knontermina, or. BAD roLz, Ann FRIEDRICH: BARTLING,OFMUNICH;

" f GERMANY. vf i x .REVOLVING-RI'NG OVENy Application med June 2,1926,:seria1 No. 113,289, and n esi-many. June 3,' 1925..`

The arrangement ot revolvingringovens such as are used for the dryingand the `dry distillation ot granular or pulverulentinaterials isgenerally known. in substance such ovens generally comprise a ringshapedmutlle built up of refractory stone within ywhich is arranged torrotationa rotary ring which acts as a hearthr and receives the materialto be treated. i 1

The object ot" the invention is to provide a novel arrangeinent'ot' sucha furnace, which presents material advantages over previously knownarrangements. The aim is .to build the oven in all its essential partsof iron, thereby effecting considerable economy both in cost and labouras compared with the usual. stone ovens, and at the same timefacilitating the erection an d dismantling ot such ovens so as to enablethe sameto be readily moved tromplace to place without much trouble andsubstantial foundations. y

In order to attain `this object according to this invention,'theA wholeoven is construct-ed as a suspension oven. `Accordingly the annularmu'llle is suspended trom a carrier.

`iframe ot' the simplest type. rlhe revolving' 'ring hearth closing thelower opening of the mullie is carried by a carousel-like rotarysupport, the etlect of all this being that an oven of this kind may beconstructed at extremely small cost, and can be quickly assembled anddisassembled. y

The 'foundation comprises merely appropriate foundation blocks formingthe'supports for the carrier trame and forv the ournal of the carousel,which latter as a'rule, is constructed in the form of a so-called kinglf the ring hearth isV to be provided with heating from below, this canbe easily effected by equipping the ring with a channel shaped cavity towhich the heating agent is supplied from the centre ot the oven by wayot a swinging pipe. In order to enable the condensate separate fromtheheating medium to be removed, use is made, according to theinvention, ot a stationary ring shaped trapping trough revolving belowthe ring and in which are discharging sockets for the condensate. Theoven cover. according to this invention, is made by preference withdouble walls of iron with the interposition of an insulating layerbetween the walls. An oven cover of this kind is cheap and yet fullycapable of replacing y l y A constructional form of theinvention isdiz-igrammatically illustrated by way `ot exa bricked arching. f`

ample in the annexed drawing Vin.` sectional elevation.

The oven comprises a suspension frameA composed (it-simple girders andprovided with supporting arms a which, rest onsupports rb which areanchoredin f foundation blocks c. Suspended from eachlcarrier arm at asuitable. distance are two bolts CZ, krand suspended from these is theri walled'cover e, e connected to which in downward directionare lateralcheeks f, f. Between the walls er, 'e' 1s a space whichis illed withinsulatingmaterial g. Arranged at a suitable point in the coverisanoutlet 7L. y rihe downwardly openmuliie is close against the revolvingring Z which rests on a carousel-like support Ther latter comprises a,socalledlking pin z' arms 7c onthe ends of which the ring hearth Z iscarried. The rotation ot therking pin z' is etlected by a gear oftheusual kind, for example, a worm gear The ring hearth Z iasits top rfaceprovided with a cavitated surface 'Il' for the reception of a thinlayerof the charge. Itis constructed as ahollow body so as toprovide achannel shaped heating chamber av which laterally may be confined 4byinsulating layers n', n. The lateral cheeks f, fV of the inutile are bypreference trough Y shapedto form coolingtroughs which receive lateralribs 0 of the ring Z. kThe sealingwlthin these troughs is effectedbysand or a cooling liquid.

-The admission ofthe heating `agent,'for example` steam to the heatingchamber n, is ellected by a swing pipe 7) which revolves with Vthe ringl, and by preference may be jourary trough#l is arranged beneath thering revolving in which are discharge pipes s leading from the heatingchamber n.

provided with radial;`

y shapedcven 4H. inutile E. LThe latter consistsfoi' adouble Having newparticularly described and ascertained the nature of our said inventionand in what manner the same is to be performed, we declare that what weclaiin is l. In a rotary ring hearth oven, a stationary supporting`structure, a'ring shaped mufie suspended therefrom and havingfan'` openunderside, av hearth rotata le relative to said muflle and forming,laclosure for its underside, said hearth having` a heating chamberbeneath theV saine,` a rotary support for said hearth rotating about acenter concentric to said mutile, a pipe for supplyinpjja heating jmedium to said chamber rotatably supported by said stationarysupporting` structure and movable about a'center coincident 'with thecenter of rotation of said rotary support, oththerefrom and including acover consist-ing of n .spaced metallic walls, ay heat insulating`medium between said walls, arotating hearth supported for rotation belowsaid muttle, and means for rotating said hearth.

' In a rotary ring hearth oven` a support-Vr ing structure, an oven bodyincluding' a ringrshaped inutile constituted by a cover and'sideVmembers depending therefrom, means for suspending said cover and lsidemembers entirely from said supporting` structure, a rotatingl hearthsupported forrotation below said muiile and between said side members,and

means for rotatingsaidhearth.

4;. In a rotary ring hearth oven7 a support--k ing structure, an ovenbody including a ringshaped muftle constituted by arcover and sidemembers depending,` therefrom, 'means for c suspending-Said cover andside members entirely from said supporting structure, a ro-` tatinghearth supported for (rotation below said mufle and between said sidemembers, a

supporting member forsaid hearth extending inwardly-therefrom in a.radial directionto a point coincident with the cent-er of rotation ofsaid hearth, avpivot aboutwhicli said sup-` porting,` member revolves,and means to revolve said hearth-supportingsmember.A

5. In a rotary ringhearth'oven, a supportingstructnre, an ovenbodyincluding` a rinhshaped inutile constituted by a cover and einemembers depending therefrom, ineansfor suspending said cover andsidemember-s entirely from said supporting structure, a rotating hearthsupported for rotation below saidfmuflie and between said side'ifneinbersh 'said hearth having a heating` chamber bec neath the same,a sup'iortingvmember for said hearth. extending inwardly therefrom in aradial direction to a' point coincident with `the center of rotation ofsaid hearth, va pivot y about which said supporting member revolves,means to revolve said hearth-supporting member, 'and a pipevforsupplying' a heating medium to said chamber,l said pipe having-oneendrotatably mounted inV said supporting` .structure above said pivot andbeing n movablewith said rotatable 'supporting member.

ln testimony whereof we have signed our rnames to this specification.

LUDWIG HONIGMANN..

rainnaicri naarmate.

